Harness-sheave stand for looms



1930. A. D" GARGOLINSKI HARNESS SHEAVE STAND FOR LOOMS Filed Sept. 19, 1929 f mm Patented Dec. 30, .1930

UN rEn STATES FA E ANTHONY n. GAneoLINsK I, or wouonsrnn, MASSACHUSETTS, nssreivon T GROMPTON. woacnsrnn; MASSACHUSETTS, A ooeronATIono-r & KNOWLES 'LOOM iwomzs; or MASSACHUSETTS orFlcsa HARNESS-SHEAVE STAND ron- LooMs Application filed. September 19, 1929. Serial No. 393,822.

This invention relates to improvements in the stands which support the harness sheaves of looms and it is'the general object of. the inventionto provide an improved and simplified form of sheave stand which canbe readily clamped to the arches of the loom'frame and support the sheave shaftin jimproved.

manner; L In the usual form of'loom it is customary ness cords which passover sheaves and are 7 attached to a harness lifting mechanism, such .3? 'set forth in the claims.

In the accompanying drawings wherein a as a .do'bby. It is desirable to be able to raise the sheaves from time to time to com- Ipensate for stretching of the harness cords. It isan importantobj ect of my present inven- 7131011 to provide a stand having means whereby thesheave shaftmaybe raised or lowered and limited as toendwise and lateral motion by the stand.

It is :a further objectofiny p resentinvem I tion to provide aharnesstsheavefstandjhav ing parallel sides between which moves an I adjusting screw havingva'head pivotally con- :nected to the shaft of the sheaves;

With these and other objects in view which will appear as the'description proceeds, my

invention resides in the combination and an rangement of parts hereinafter described and convenient embodiment of my invention is set forth," 7 I Fig. 1 is a'front elevationof theupper portion of a loom'having'my invention ap- 'plied thereto, t

I Fig; 2 'isan enlarged vertical section on line 2 2 of Fig; 1,

" hooks 14 to receive the-lower ends of the harness cords 15. The latterpass over to raise the harness frames by means of harbottom of the web.

sheaves 16 and thence to the harness controlling mechanism not shown, such for instance as a dobby. The sheaves are freely rotatable on a shaft 17. During the operation of the loom the harness framesiriseandfall, caus mg rotation of the sheaves about the shafts.

The arches maybe T-shaped in cross section substantially as shown in Figs. Q'and 4, having ahorizontal shelf 18 and a'vertical web 19. The matter thusfar described is of the" usual construction and forms no part of my present invention. It is to be understood that there will be at least two sets of sheavesea'ch having a shaft '17; and that both ends of each shaft will besupported by the stand to be described hereinafter. Inasmuch as the stands are all similar I will describe b-ut one of them. Y Y

The stand comprises a member 30 having a foot 31 which rests against the upper surface,

of the shelf 18 0f the arch. A vertical surface 32 formed as part of the member 30 engages the right hand end of the web 19 as viewed in Fig. 2, the foot andsur'face 32 t'en'ding to limit downward and left hand m'ove-' ment'of'the member 30. The upper end of the member 30-is'provided with a head '33 through which extends a vertical slot 345 the foot 31 extending rearwardly from the head as suggested in Fig. 2.

Extending downwardly from the sides of the headas viewed in Fig. 3 are spaced arms 35 between which liesa slot 36 in which is located a vertical screw37. The latter has 'at the lower end thereof a head 38 with vertical" sides 39 to engagethe inner adjacent faces 40 of the arms 35. The head is perforated and receives one end of the shaft 17; The upper end of the screw 37 passes through a winged nut 41which rests on top of the head 33.

The other member 42 of eachstand has an upper finger 43 to engage the left hand vertical edge of the web 19 and is provided with an upwardly facing surface 44 to engage the A bolt 45 extending through the member 42 and through a slot 46in the member 30 has a head 47 which-lies in a. recess 48 also formed in the member 30. The left side of the slot 36 as viewed in Fig; 4 is defined by plate 49integr'al w-i-ththe memportions of the member, and a vertical her 30 and lying under the right end of the shelf 18, as viewed in F ig. 4. The member 30 is provided with an inclined surface 50 which corresponds to and is normally in engagement with a similar inclined surface 51 on the member 42.

lVhen the parts are being assembled the members 30 and 42 will be placed approximately as shown in Fig. 4, and the bolt 45 passed through the recess 48 and vertical slot 46 in the member 30. The bolt will also extend through a bore 52 in the member 42 2111C will have the head thereof drawn against the bottom of the recess 48 by means of a nut 53. The latter acts to cause relative sliding movement of the inclined surfaces 50 and 51, the effect of which is to draw the foot 81 downwardly against the shelf 18 and draw the surface 32 against the right portion of the web 19 as viewed in Fig. 2. There may also be a corresponding upward movement on the part of the member 42 induced by the inclined surfaces to move the shoulder 44 against the bottom of the web 19 and the finger 48 against the left side of said web as viewed in Figs.

2 and 4.

\Vhen it is desired to raise or lower the sheaves the winged nut 41 will be given a rotation in the proper direction, being held in final position by a rib 54 on the head 33 which enters a groove 55 in the winged nut. The walls 40 act to hold the head 33 against rotation when the winged nut is turned. The

plate 49 engages the head 38 and shaft 17 to limit movement of these parts toward the arch.

From the foregoing it will be seen that I have provided a simple form of sheave stand wherein the two parts which are clamped against the arch are so arranged as to support the shaft 17 at a point intermediate their sides, as is apparent from the relation set forth in Fig. 5. Furthermore, the head 38 on the screw moves between the arms 35 and throughout the greater part of the vertical adjustment of the shaft is restrained against endwise movement by engagement with the plate 49. By this construction it is unnecessary to provide any additional means to engage the sheaves 16 to position the same.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do notwish to be limited to the details herein disclosed but hat I claim is:

1. In a loom having an arch anda shaft to support harness sheaves, a pair of members engaging opposite sides of the arch, means to clamp said members together, one of said members having a vertical recess extending herethrough surrounded on'three sides by threaded member lying in the recess and having supporting engagement with the sheave shaft and supported by one of the members.

2. In a loom having an arch with spaced horizontal and spaced vertical surfaces and a shaft to support harness sheaves, a pair of members engaging the surfaces of the arch to be guided thereby, means to clamp said members together, one of said members having a vertical recess extending therethrough surrounded on three sides by portions of the member, and a vertical threaded member lying inthe recess and having supporting engagement with the sheave shaft and supported by one of the members, said means including surfaces which are inclined with respect'to the horizontal and vertical surfaces of the arch.

3. In a loom having an ach with spaced horizontal and spaced vertical surfaces and a shaft to support harness sheaves, a pair of memberse engaging the surfaces of the arch to be guided thereby, means to clamp said members together, one of said members having a vertical recess extending therethrough surrounded on three sides by portions of the member, and a vertical threaded member lying in the recess and having supporting engagement with the sheave shaft and supported by one of the members, said means including surfaces which are inclined with respect to the horizontal and vertical surfaces of the arch, the inclined surfaces extending on both sides of the sheave shaft tending to guide the members as said members are clamped together.

4. In-a loom having an arch with spaced horizontal and spaced vertical surfaces and a shaft to support harness sheaves, a stand member engaging a vertical and horizontal surface of the arch and having a vertical recess therein defined by two arms and a connecting web between the arms, a screw lying in the recess, means to support the screw and vary the relative position thereof with respect to the member, a head formed on the screw to receive the sheave shaft, a second member to engage the other horizontal and vertical surfaces of the arch, and clamping means to hold said members together in fixed relation with respect to the arch.

5. In a loom having an arch and a set of sheaves on a shaft, a stand secured to the arch and having a vertical recess therein, a screw located in the recess, a head formed on the screw to engage portions of the stand on opposite sides of the recess to limit movement of said head, said head having a bore to receive the shaft, and means to support the screw on the stand and vary the vertical'position thereof with respect to the stand to raise and lower the head and shaft.

6. In a loom having an arch with spaced horizontal and spaced vertical surfaces and a shaft to support harness sheaves, a member engaging one horizontal and one vertical surface of the arch, a pair of spaced arms formed as part of the member, a web connecting said arms also formed as part of the member, a screw located between the arms, a

head formed on the screw located between the arms and limited as to movement in one direction-by the web, said head having sup porting relation with respect to the sheave shaft, and means to hold-the screw in any one of a pluarlit-y of vertical positions with respect to the member.

7. In a loom having an arch, and a set of sheaves on a shaft, a stand havinga portion to overlie a part of the arch, a clamping means to hold the stand to the arch, a pair of spaced arms integral with the stand, a

Web integral with the arms and stand, said screw having pivotal connection with the shaft, and means to support the screw on the stand.

In testimony whereof I have hereunto affixed my signature. I

c ANTHONY .D. GARGOLINSKI. 

